Calculating machine



0. woonwARb. CALCULAVTING MACHINE.

APPLICATION FILED JUNE 911921- Patented July 25, 1922.

2 SHEETS-SHEET I.

' LENEEr FELL; AMMML WITNEEEEE Hi5 ATTURNEY UNITED STATES PATENT OFFICE.

OSCAR WOODWARD, OF BABYLON, NEW YORK, ASSIGNOR TO REMINGTON ACCOUNT- INGMACHINE CORPORATION, YORK.

OF NEW YORK, N. Y., A CORPORATION OF NEW I CALCULATING MACHINE.

Specification of Letters Patent.

Patented July 25, 1922.

Application flled lune 9, 1921. Serial No. 476,198.

To all whom it may concern:

Be it known that I, OSCAR WoonwARn, citizen of the United States, andresident of Babylon, in the county of Suffolk and State of New York,have invented certain new and useful Improvements in CalculatingMachines, of which the following is a specification.

, My invention relates to calculating machines and is shown embodied inthe present instance in a combined typewriting and calcu lating machinof the character known on the market as the Remington accountingmachine, (Wahl mechanism!) and one style of which is shown, for example,in the patcut to John C. Wahl, No. 1,270,471, dated June 25, 1918;although it should be understood that the invention is not restricted toits embodiment in such machines. 1

In the Remington-Wahl machine, the vertical totalizer carrying truckruns on certain rolls at th middle of the machine and is connected atits ends to the typewriter carriage to travel with the latter, thecharacter of the connections between the carriage and truck being suchthat a sli ht individual movement of limited extent 0 the truckrelatively to the carriage, and transversely of the line of travel ofthe truck, is permitted in order to automatically take care of orcompensate for any lack of absolute straightness in the truck itself orother in accuracies of manufacture. It sometimes occurs that certaindifiiculties which will hereinafter appear are encountered by reason ofthis manner of supporting the truck, and which are due to wear.

The main object of my invention isto provide simple and efficient meansfor overcoming these difiicuilties heretofore encountered.

A further object of my invention is to provide a simple and effectivemeans of the character specified which may be readily applied to aRemington ahl machine without modifying, or materially modifying.the-structural features of said machine as they now exist.

To the above and other ends which will hereinafter appear, my inventionconsistsin the features of construction, arrangements of parts, andcombinations of devices setforth in the following specification andparticularly pointed out in the appended claims.

In the accompanying drawings wherein like referenm characters indicatecorresponding parts in the different views,

Flgure 1 is a fragmentary top plan view showing a portion of aRemington-Wahl machine embodying my invention.

Figure 2 is a detail fragmentary front vlew, partly in section, showingthe connec tions between the truck and carriage at the left-hand of thelatter.

Figure 3 is a like view showing the connections at the right-hand end ofthe carl i gures 4c and 5 are detail face views of modified forms ofwasher plates that may be used as an alternative means for connectingthe forward end-s of the restraining members or springs to the truckat'the left and right-hand ends respectively thereof.

Figure 6 is an enlarged detail fragmentary vertical fore and aftsectional view of the machine, taken on a line 66 of Fig. 1 and lookingin the direction of the arrows at said line.

Figure 7 is an enlarged detail fragmentary vertical sectional viewshowing the connections between the truck andcarriage at one endthereof, the section being taken on a line 77 of Fig. l and looking inthe direction of the arrows at said line.

Figure 8 is an enlarged detail fragmen-' tary fore and aft verticalsectional view showing a modified form of means for limiting therearward thrust of the truck at the upper portion thereof.

Figures 9 and 10 are respectively fragmentary top plan and frontelevation, with parts in section, of a modified form of means foranchoring the rear ends of the springs to the carriage.

In the drawings I have shown only so much of a Remington-Wahl machineasmay be necessary to arrive at an understanding of my invention in itsembodiment therein.

Said machine comp-rises atypewriter of which there is shown in thedrawing little except a portion of the carriage 1,'its forward fixedguide rail 2, the top plate 3 and a front corner post 4. The carriage isangle brackets 6 secured to the top plate 3 by screws 7; screw bolts 8and nuts 9 connecting the angle brackets to the actuator frame. Sheetmetal arms or brackets 10 are rigidly secured in the usual manner to thecarriage 1 and project forward therefrom. The forward end part of eachbracket 10 is formed with a depending ear 11, in a tap ed opening inwhich is received the threaded end of a headed shouldered screw 12 heldb a lock nut 13. The screw 12 passes through a vertically disposed slot14 in a bracket arm 15 that is secured to and in effect constitutes partof a totalizer truck designated as a whole by the reference numeral 16.From an inspection of Fig. 1 it will be seen that the distance betweenthe front face of each ear 11 and the head of the associate screw 12 isgreater than the thickness of the bracket arm 15 to permit a slightfore-and-aft movement ofthe said arm 15 and of that end of the totalizertruck connected therewith. The pin and slot connection 1214 between thecarriage and truck also permits the latter to receive a limited up anddown movement of slight extent relatively to the carriae, but preventsany movement of the true relatively to the carriage in the direction ofthe travel of the latter and, therefore, compels the carriage and truckto move accurately together in the direction of the feed or travel ofthe carriage. The purpose of the looseness in the connections betweenthe carnage and computer or totalizer truck will hereinafter moreclearly appear. The truck also comprises a casting 17 secured by bolts18, nuts 18 and washer plates 19 to the bracket arms 15 The casting isformed with a dove-tail cross section in d1cate d at 20, to fitcorresponding openlngs 1n the side plates of each totalizer 21, and thetotalizers are thus supported on the truck. Each totalizer is held inits adjusted sition along the truck by a handreleased etent or catch 22which has a tooth that engages between teeth on the upper edge of a rackbar 23 carried by and extendmg longitudinally of the truck. Any desirednumber of detachable totalizers may be carr ed by the truck and eachcontains computlng mechanism including a series of gear wheels 24 whichare adapted to mesh, one at a time, with a master wheel 25. This masterwheel is carried by the fixed actuator frame 5 and constitutes part ofthe computer actuating mechanism driven by the numeral keys of thetypewriter.

As the typewriter carriage moves toward the left in the operation ofwriting and computlng a number, the wheels 24 move one after anotherinto mesh with the master wheel 25. Said gears 24, and the totalizers inwhich they are supported, must of necessity be gulded across said masterwheel with wise the teeth of the wheels 24 might collide with the teethof the master wheel and if the wheels 24 and 25 do not mesh properly theoperation may be hard or otherwise imperfect. In the Remington-Wahlmachine, as heretofore constructed, the totalizer truck has been looselyconnected with the arms 10 by means of the pin and slot connection 12-14in the manner hereinbefore described. The truck by reason of thisconnection has a small limited amount of freedom of movement at its endsboth up and down and also front and back with respect to the ends of thebrackets 10. The accu- 'rate guiding of the truck is effected at themiddle of the machine sulstantially in the front to rear vertical planeof the master wheel 25, this being the point at which accuracy isrequired. To this end the truck has been given a cross section like thatindicated .in Fig. 6 so as to provide three trackways 26, 27 and 28. Thetrackway 26 is at the bottom of the truck and faces downward and issupported by a roller or wheel 29 which carries the vertical weight ofthe truck, and of the totalizers mounted on it. The trackway 27 is atthe bot-tom of the truck and faces rearward and presses against a rolleror wheel 30. The trackway 28 is at the top of the truck and pressesforward against a roller 31 somewhat similarly to the rollers 29 and 30;all these rollers 29, 30 and 31 being carried by the fixed actuatorframe 5' in the ,fore-and-aft vertical plane of the master wheel. Inpractice, the bearing for each of said rollers is so constructed as toafford a fine adjustment of the roller transverse to its axis, so that,in manufacturing the machine, the truck can be adjusted to cause thegears 24 to mesh accurately with the master wheel 25.

In addition to the rollers 29, 30 and 31, the Remington-Wahl machineincludes an adjustment stop a coacting with the truck to limit itsupward displacement in the plane of the master wheel. Said machine alsoincludes an adjustable stop 6 coacting with the truck in the same planeto limit the rearward displacement of the upper part of the truck. Theshoulder 0 at the rear ed of the track 26 coacts with the side of t eroller 29 to limit the forward displacement of the truck at the lowerend thereof. The said stops and rollers are all carried by the fixedactuator frame 5 and located in the plane of the master wheel. Therollers 29, 30 and 31 supply a means for guiding accurately that portionof the truck which at any 'ven moment is passing the master whee andinsure a proper intermeshing of any individual totalizer wheel 24 whichis for the moment brought, or is about to be brought into co-operativerelation with the master wheel.

a considerable degree of precision, as other- It will-be observed thatthe center of gravity of the truck is a little forward of'the roller 29by which the weight of said truck is supported, and this is' especiallyso when severa totalizers are mounted and project forward therefrom, sothat there is a constant pressure due to the weight of the partsbackward on the lower back roller 30 and forward on the upper frontroller 31. In some instances a number of totalizers are mounted on thetruck and the overhanging weight then becomes considerable, and it hasbeen found that sometimes the upper front roller 31 co-operating withthe trackway 28 fails to turn. Said trackway, sliding against the roller31, gradually causes wear, the roller sometimes being worn flat so thatit has to be replaced with a new one. The coacting face of the track 28also becomes unduly and unevely worn, and the wear on this roller andtrack allows the upper part of the truck to swing forward and destroythe nice adjustment and relation between the totalizer wheels 24 and themaster wheel 25.

The immediate object ofmy present invention is to overcome thisdifiiculty without detracting from the loose'connection between thecarriage and truck which enables the latter to move up and down withoutrestraint at either end relatively to the carriage and to attain theadvantages derived from such movement.

To these ends I employ connecting'means separate and distinct from thosepreviously described, and in addition thereto, for connecting the truckand typewriter carriage, and for opposing, overcoming, restrainin orcounteracting the tendency of the true to move forward at the upperportion thereof relatively to the carriage.

In the present instance these means comprise two substantially}horizontally disposed connecting or restraining members 32.

' varied at will. As shown in These are shown in the-present instance ascoiled contractile springs which extend longitudinally fore and aftofthe machine one at each end ofthe truck. The rear end .of each spring isanchored to the carriage in any suitable manner, the forward ends beingconnected to the truck and preferably adjustable means are provided foreach member or spring 32. As shown in. Figs. 1, 6 and 7 each spring isconnected to. a pin 34 riveted at 35 to a connecting arm 10, andprojecting inwardly therefrom above the usual tie-rod 36 which connectsthe arms 10 and which is secured thereto'by nuts 37 and 38. or spring 32is connected to the truck near one end thereof by adustable means bywhich the tension of the sgring may be igs. 1, 2, 3, 6 and 7 the forwardend portion of each spring receives therein an exteriorly and interiorlythreaded nut 39, the exterior threads coacting with the convolutions ofThe forward end of each member.

thespring to holdthe nut in place, and the interlor threads coactingwith an adjusting screw 40 or 41. As shown. in Figs. 1 an 2 the screw 40extends through a countersunk opening formed in the left-hand bracketarm 15 of the truck and is threaded into its companion nut 39. Theright-hand screw 41 in a like manner extends through an opening in theright-hand bracket arm 15 and connects with a nut 39 in the righthandspring 32. By these means each screw 40 or41 may be independentlyadjusted to var the force exerted by itsv companion spring rearwardly onthe upper part of the truck and thus vary the restraming or opposingforce of the springs at opposite ends of the truck which tends tooppose, restrain or counteract its tendency to move forward at saidupper portion under its weight and the overhanging weight of thetotalizers mounted thereon, and thereby counteract the tendency of thetruck through its track 28 to bear with more or less force against theroller 31. In other words the effect of the springs 32 is to exert arearward; pull on the upper part of the truck and thus to take a part ofthe force, due to the over-hang of the totalizers,which' tends to movethe upper part of the truck toward the front of the machine, and whichforce or pressure has heretofore been borne in its entirety by the wheel31. The tension of said springs can be regulated by means of the screws40 and 41, and the pressure of track 28 against wheel 31 will be'relieved or diminished by whatever such tension amounts to. The extentof adjustment of the springs may vary according to the number oftotalizers mounted on the truck, or'according to how far it may bedeemed desirable or necessary to restrain or counteract the tendency ofthe truck to move forward. It is my purpose to provide springs 32 whichare 'stlfi' enough, and to so construct the adjusting means thereforthat any desired result may be obtained, from com letelv overcoming thetendency of the loa ed truck to move forward against the roller 31, tomerely restraining or neutralizing this tendency to an extent that willrelieve or lighten the weight of the truck on the roller. It willbe'seen that the force of the springs 32 is exerted only to fore and aftof the machine and is merely exerted to restrain, resist or op ose aforward movement of the truck relatlvely to the carriage withoutopposing or interfering with the relative orjindividual up and downmovement of the truck permitted by the pin and slotconnection 12-14.

It may be found desirable in some instances to substitute for the usualback stop b shown in Fig. 6, a back stop roller 42 as shown in Fig. 8,and said roller 42 may if receives the forward thrust of the truck. Whenthe back stop roller 42 is employed then the truck is freed from unduefrictional resistance that might be encountered between the truck and aback stop such as the stop I) in the event that the force ofthesp-ringsis great enough to normally maintain the loaded truck off theroller 31 and in contact with the back stop.

In order to apply the devices of my invention as thus far described tothe Remington-Wahl machines now on the market, it is merely necessary toconnect the pins 34 to the arms 10 as indicated, and to substitutebracket plates 15 of the form shown and which are providedwith'perfo-rated ears or enlargements 4:3 for the detachable bracketplates usually employed and which are devoid of such perforated ears.

If preferred, however, the usual bracket arms by which the truck isconnected to the carriage may be used and the usual washer plates 19 maybe replaced by combined washer and bracket plates 19 and 19", such asare shown in Figs. 4 and 5 respectively. These substituted plates 19 and19 may be employed for connecting the left-hand and right-hand screws 40and 41 respectively thereto. Moreover, if desired the pins 34 may bedispensed with and sheet metal bracket arms 44; may be secured in. placeby the nuts 38 and the rear ends of the springs 32 may be anchored tothe arms H as shown in Figs. 9 and 10.

It will be understood, therefore, that by the provision of simple andeffective de vices which are-in the nature of attachments that may bereadily applied to existing; forms of machines without changing, ormaterially changing, the structural features of said machines as the nowexist, I am enabled to overcome the isadvantages heretofore encounteredby relieving wear on the forward guide roller 31 and its track 28,thereby preventing the difficulties which are apt to raise from suchwear.

What I claim as new and desire to secure! by Letters Patent, is,

1. The combination of a totalizer truck normally having individualfreedom in its runway and a tendency to move forward from its normalposition when carrying totalizers, a typewriter carriage, a connectionbetween the carriage and truck for causing the two to travel together,and another and independent intervening connection for opposing thetendency of the truck to move forward.

2. The combination of a totalizer truck having individual freedom in itsrunway and a tendency to move forward from its normal position whencarrying totalizers, a typewriter carriage, and an interveningadjustable connection for opposing the tendency of the truck to moveforward.

3. The combination of a totalizer truck having individual freedom in itsrunway and a tendency to move forward from its normal position whencarrying totalizers, a typewriter carriage, and an intervening springconnection for opposing the tendency of the truck to move forward.

4. The combination of a totalizer truck having individual freedom in itsrunway and a tendency to move forward from its normal position whencarrying totalizers, a typewriter carriage, and an intervening adjustable spring connection for opposing the tendency of the truck tomove forward.

In a calculating machine, the combination of a carriage, a totalizertruck, means for connecting the truck to move with the carriage butenabling the truck to have a limited movement relatively to the carriagetransversely of the line of travel of the truck, and two members inaddition to said connecting means for connecting the truck and carriage,each of said members extending longitudinally fore and aft of the machine and exerting a restraining force on the truck to resist a tendencyof the truck to move forward.

6. In a calculating machine, the combination of a carriage, a totalizertruck, means for connecting the truck to move with the carriage butenablin the truck to have a limited movement re atively to the carriagetransversely of the line of travel of the truck, a bearin roller whichcoacts with said truck to guide it and limit its forward displacement,and two members in addition to said connecting means for connecting thetruck and carriage, each of said members exerting a restraining force onthe truck to resist a tendency of the truck to bear forwardly againstsaid roller.

7. In a calculating machine, the combination of a carria e, a totalizertruck, means for connecting t e truck to move with the carria e butenabling the truck to have a limited movement relatively to the carriagetransversely of the line of travel of t e truck, and two members thatextend longitudinally fore and aft of the machine, each member beingconnected at its forward end to one end portion'of the truck and at itsrear end to the carriage and o posing the tendency of the truck to moveorward.

8. In a calculating machine, the combination of a carriage, a totalizertruck, means for connecting the truck to move with the carriage butenabling the truck to have a limited movement relatively to the carriagetransversely of the line of travel of the truck, two members that extendlongitudinaly fore and aft of the machine, each member being connectedat its forward end to one end portion of the truck and at its rear endto the carriage and opposing the tendency of the truck to move forward,and

